Handcrafted with real USA steel, the Von Frankenstein Monster Gear BeastMode Bass Strings play true to their name — these strings are a beast. Von Frankenstein bass strings are made on a U.S. workbench using the best-available, domestically sourced, raw materials. Each BeastMode Bass String is made by hand, one at a time, with nickel-plated steel that’s carefully wrapped around a treated hex steel core. Through this meticulous process, Von Frankenstein ensures the quality, feel and durability required by the most discerning of tone aficionados.